Optimal Air Filtration: Experience cleaner, healthier air with our for MSA3/MSA3S Air Filter Replacement. Featuring an advanced 4-in-1 filtration system, this filter effectively captures up to 99.97% of airborne particles, including dust, pollen, smoke, and odors. H13 True HEPA Filter: Equipped with a high-grade H13 True HEPA filter, our product ensures the highest level of purity, trapping particles as small as 0.3 microns. Ideal for allergy sufferers and those seeking a fresher indoor environment Easy Installation: Designed for a with the for MSA3 and MSA3S air purifiers, this replacement filter is easy to install, ensuring you get back to breathing cleaner air in no time Long-Lasting Performance: Our replacement filter maintains optimal performance of your air purifier, extending its lifespan and ensuring efficient operation. Replace every 6-8 months for best results Product Name: Filter Compatible Models: for MSA3/MSA3S HEPA Air Purifier Filter Main Function: Filters fine dust (The product printed words depending on the batch, but this does not affect use) Color: As Shown Material: HEPA Package Contents: 1 x HEPA Filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.